Warp stop-motion.



E. H. RYON.

WARP STOP MOTION.

APPLICATION FILED 111 12.26, 1913. 1,079,025. Patented Nov. 18, 1913.

2 SHEETS-SHEET 1.

E. H. RYON.

WARP STOP MOTION.

APPLICATION FILED APILZS, 1013.

1,079,025. Patented Nov. 18, 1913.

2 BEEETS-BHEET 2.

' TE STATES PATENT OFFICE.

EIPPA H. RYON, 0F WALTHAM, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

WARP STOP-MOTION.

1 '0 all whom it may concern:

Be it known that I, Errn H. RYoN, a citizen of the United States, residing at lValtham, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in arp Stop- Motions, of which the following is a specification.

My invention relates to warp stop motions, and more particularly to a mechanical warp stop motion of the class in which there are one or more series of drop devlces supported on the warp threads, and in the case of the breaking of a warp thread the drop device supported thereon will drop into the path of a moving bar or actuator and stop the movement thereof, and through intermediate mechanism cause the shipper lover to be moved to stop the loom, in the usual and well known way.

The object of my invention is to improve upon the construction of warp stop motions of the class referred to, and more particularly to do avay with the mechanism intermediate the warp stop motion and the shipper lever, by means of which the shipper lever is operated to stop the loom in case of the breaking of a warp thread, without undue strain on the drop devices, and to provide a direct connection from the warp stop motion to the loom stop motion.

My invention consists in certain novel features of construction of my improvements as will be hereinafter fully described.

I have shown in the drawing parts of a mechanical warp stop motion of ordinary construction, having two sets of drop devices, with my improvements applied thereto, su'tlicient to enable those skilled in the artto understand the construction and operation thereof.

Referring to the drawings :-Figure 1 is a front View of a mechanical warp stop motion, broken away through the center, with some of the drop devices left off, and looking in the direction of arrow a, Fig. 2. Fig. 2 is an end view of the parts shown in Fig. 1, looking in the direction of arrow 6, same figure; the loom frame is not shown in this figure. Fig. 3 corresponds to Fig. 2, but shows some of the parts in a different position. Fig. 4 is a section, on line 1, 1, Fig. 1, looking in the direction of arrow 0, same fig ure; some of the parts shown in Fi l are atented Nov. 1 8, 1913.

Serial No. 768,745.

not shown in this figure. Fig. 5 is a detached section, on line 5, 5, Fig. 2, looking in the direction of arrow (Z, same figure. Fig. (3 is a plan view of the parts shown in Fig. 1, looking in the direction of arrow 0, same figure. Fig. 7 is a detached view of two operating levers, forming a part of the operating mechanism, and, Fig. 8 corresponds to Fig. 7, but shows a different position of said levers.

In the accompanying drawings, 7 is a por tion of the loom side, 2 is a stand or bracket secured thereto, and having a boss thereon with an opening therethrough for the upright rod or bar 3, which is vertically adj ustable in said boss. ()n the upper end of the upright rod 3 is a transverse boss 3', see Fig. 6, having an opening therethrough to receive the angle shaped rod 4;; one end of said rod 1 is secured in the boss 3 by set screws 1, and the other end of said rod 4; has secured thereon by a set screw 1, the boss 5 on the upper end of the end frame 5 of the warp stop motion. The other end of the end frame 5 at the opposite end of the warp stop motion is supported in a like manner by a second rod 1, see Fig. 1.

Extending transversely between the end frames 5, and connecting said end frames, are the bars (5, see Fig. 1, also extending be tween the end frames 5 are the two warp supporting rods 7. There are in this instance two sets of drop devices 8, made of thin metal, and having in this instance open end slots in their lower part, and closed slots in their upper part, through which extend the rods or wires 9, to limit the downward movement of said drop devices. The drop devices are supported in their raised position, as shown at the left in Fig. 1-, by the warp threads, not shown, extending through the open end slotted portion of the drop devices, in the usual way.

Extending below the drop devices, when they are in their raised position, is a plate or bar 10, supported on arms 11 fast on a rock shaft 12, loosely mounted in suitable bearings 5 on the lower end of the end frames 5, see Fig. 1. On one end of the rock shaft 12 is fast an arm 13, having a slot 13 therein, see Fig. 3, into which extends a pin 14 on an arm 14, of angle shape, see Fig. 1, and having its hub 11" loosely mounted on a stud 15, carried on a pivotally mounted lever 16. The lever 16 ispivotally mounted on a stud 17 on the frame 5, see .Fig. 3.

Onthe pivotally mounted lever .16 on a stud 16 is pivotally mounted the hub 18' of a lever 18; said lever 18 extends overthe flat surface 14 on the upper end of the lever14, see Fig. 3. The lever 18 has a study 19't-hereon, on which is pivotally mounted a lever 20; one end of the lever 20 extendsover the free end of the lever 18, and has attached thereto thelower end of ,apin. 21, which1extends through a lug 16" on the lever .16. A helically coiled expansion spring 22,encirclesxthe pin 21,.andbears at oneend against the lug-16" on the lever 16, and :atits .otherend againstone end ofthe lever -.20,.and. acts to movedown the .endof .saidlever :20, and also'acts as ayiel'ding or give-way connection between thelever 20 and the latch 23. The other end of the lever 20 extends :into .a'notch or recess 23,:see'Fig.

5,111 .a latch 23, which is pivotallymounted .on a stud 24': on the lever .16. The lever 16 has an o enin 16 therethrotwh .seeFi -3,through which the engaging (811d .23 'of sai'dxlatch 23 passes. Also pivotally. mount- .ed on the stud 17is the hub .25, seerFigs"? .cured'thereon, .in thisinstance, two headed studs 26, andialso has an opening 25 ":there- -.through. A second lever 25 has on its edge, .contiguousito the edge of the lever 25*, two

- .reces'sediportions 25 ,'to receive the studs .26. A helically coiled contraction spring 27 .isattached atone end tothelever 25 and.

atits: other end to the lever 25", and acts'to hold the levers together. Each'stud 26 is a Ffulcrum for the lever .25 'to turn on, when; the lever 25 is connected to the moving'lever 16 by theilatch 23 entering 1111101118 opening 1 2:5?" said lever 25%, .as shown by broken llIlQSflIl Fig. 5, so'that said -lever25" will be .rockedton one of its'fulcrum studs 26, and ra sedor'zlowered relative itonthe lever 25?. The two. levers 25 and 25. .areconnected by 'afdouble toggl-e'joint. The'outer end of the lever: 25 has an open1n'g25 therethrough, see F1gs-7 and 8, and also .lugsor projec- .tions:25 thereon, see Fig.3 2A bOllJ'Q-Xf tending through the I openlng 25 in .the.

i-lever-25?, and through .the'slo-t 2:8 in a bar 29, radjustably connects the lever '25 with the bar 29, which has openings29cthere-,. ith'rough, throughnone of which loosely ex tends .a stud 29 which is held in positionby :a set screw80- onithe lower end of a'lever 31. :The1stuch29 acts: as a movable pivot .or fulclaim {for the ;leverz25 The upper;endof .the lever-'31 is loosely mounted on the'rod 1 1,; and-is connected by a U :shape'dend31,

-see Fig.6,with theupperend of asecond .lever-32, also:looselyymounted atY-its upper endon the rod 4,=soythat the :levers 131 and '32 :.are rigidly '.:conneoted together. The:

:lower end of the lever '32 carries .aastud 33 thereon, on which is mounted one end of a .rod headB l; the otherend ofsaid rod head 34 hasthe endof a rod or connector 35 ad: justably connected thereto. The rod 35 at its other end, not shown, is connected to the loom stop mechanism.

The .pivotally mounted lever 16, abovedescribed, has on its lower part a stud 36, see

Figs. 2 and 3, on which is mounted the hub '37 of a swivel 37 In the swivel 37 is secured, by a set screw 38, the upperaendof .a rod orconnector 39. The ,rodor connector 39 is operated in the usual way by a driven cam, or :some other .part of theloom, not shown.

From the above descrlptlon 1n .connectlon with the drawings the operation of my improvements Will be readily understood'by those skilled in the art.

:ln the normal operation of the loom through the movement of the :rod vor connector 39, a'rockingmovement is communicated ;to the :lever 16 on its supporting stud 17, and'through the lever '14, mounted on thestud 15on said lever 16, andthe .pin

.14 extending 'into the slot '13 inthe arm the angle lever 14, asshown in-Fig. 2, with the end of the lever 20 extending :in the notchc23 in the leverx23, and actingto hold said latch .23 in "its I inoperative position, shown by full'lines in :Fig. 5, with its end free from-the opening25 in the lever25 leaving said-lever 25 at rest, and'in theaposition shown in '1 1g. 2. In case ofthe breaking of .one of the warp threads, and the dropping down of a drop device 8 in =the path ofthe reciprocating bar'10,'as shown at the right'in-Fig. 4, themovement of-said harlO is arrested, and .thelever 14, pivotally mounted on the-stud '15 on the :lever '16, is held stationary. The continued movement ofgthe lever 16 in an' 'upward or downward directionythrough the operation of the connector 39, will cause .the end ofithe lever 18 to ride on. the .upper flat surta'ceuoi" the now stationary lever .14, and through the engagement vofeitherend ot said fiatsurf-ace with 1 the lever 18, said lever 18 will bemoved, relative to the lever '16, :and the 'lever 20,

yieldinglylhelfd in engagement with the'lever 18 by sthe espring 22, will ZLlSO TbG movechend cause the latchi'23gto be rocked on its apivotal support, and moved from the position shown :by full lines? in Fig. 5, tot-the position shown by dotted lines, causing the engaging end 23 on said latch 23 to enter the opening 25 in the lever 25, and thus attach said lever 25 to the lever 16, to cause said lever 25 to move with the lever 16. The movement of the lever 25 with the lever 16 will act to move the lever 25 on one of the fulcrum studs 26, the upper, or lower stud, according to the upward or downward movement of the lever 25 and the lever 16. Through the movement of the lever 25 on its fulcrum stud 26, and on its Pivot stud 29, a movement is communicated, to the lever 31 and to the lever 32, and through the connector rod 35 the loom stop mechanism is operated to stop the loom. After the loom has been stopped, and the lowered drop device restored to its raised position, the parts will assume their normal position, and the loom will continue to operate in the usual way, all as will be readily understood by those skilled in the art.

It will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A warp stop motion for looms, comprising a series of drop devices supported on warp threads, and adapted to drop into the path of a vibrator bar on the breaking of a warp thread, and said vibrator bar, and a lever having a reciprocating movement, and yieldingly connected with said vibrator bar, and a lever pivotally mounted at one end adjacent said first mentioned lever, and means to connect said levers on the breaking of a warp thread, and a second lever pivotally mounted, and having a double toggle joint connection with said second mentioned lever, and connections intermediate said third mentioned lever and the stop mechanism of the loom, to stop the loom on the breaking of a warp thread.

2. A warp stop motion for looms, comprising a series of drop devices supported on warp threads, and adapted to drop into the path of a vibrator bar on the breaking of a warp thread, and said vibrator bar, and a lever having a reciprocating movement, and yieldingly connected with said vibrator bar, and two levers having a double toggle joint connection, and means to connect one of said levers with the first mentioned lever to move therewith on the breaking of a warp thread, and the third lever mounted on a movable pivot and connected with the stop mechanism of the loom.

3. A warp stop motion for looms, comprising a series of drop devices supported on warp threads, and adapted to drop into the path of a vibrator bar on the breaking of a warp thread, and said vibrator bar, and a lever having a reciprocating movement, and yieldingly connected with said vibrator bar, and two lovers having a double toggle joint connection, one of said levers adapted to be connected with the first mentioned lever to move therewith, and means for connecting said levers, and the third lever mounted on a movable pivot and connected with the stop mechanism of the loom.

4. A warp stop motion for looms, comprising a series of drop devices supported on warp threads, and adapted to drop into the path of a vibrator bar on the breaking of a warp thread, and said vibrator bar, and a lever having a reciprocating movement, and yieldingly connected with said vibrator bar, and two levers having a double toggle joint connection, one of said levers adapted to be connected with the first mentioned lever to move therewith, and a latch or device for connecting said levers on the breaking of a warp thread, and yielding or give-way means for operating said latch or device, and the third lever mounted on a movable pivot and connected with the stop mechanism of the loom.

5. A warp stop motion for looms, comprising a series of drop devices supported on warp threads, and adapted to drop into the path of a vibrator bar on the breaking of a warp thread, and said vibrator bar, and a lever having a reciprocating movement, and yiehlingly connected with said vibrator bar, and a lever pivotally mounted at one end adjacent said first mentioned lever and means for connecting said lever and a second lever pivotally mounted, and having a double toggle joint connection with said second mentioned lever, and connections intermediate said third mentioned lever and the stop mechanism of the loom, to act directly on the shipper lever and stop the loom on the breaking of a warp thread.

EPPA H. RYON.

Witnesses J OHN C. Dnwnr, Minna Haas.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

